Monthly outlook for Seaside, CT: average high 60.3°, average low 49.8°. That is 0.5° below the climate normal for October. Precipitation is expected on 6 days (about 4.2 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 14 October (77.1°), the coolest 18 October (36.1°).
60.3°/49.8°
Average high / low
−0.5°
Below normal
6 / 5
Wet days / normal
4.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
62.1°
61.9°
+0.1°
21 October – 30 October
57.3°
58.9°
-0.9°
31 October – 9 November
at normal
56°
—
October records over 66 years
82°8 October 2007All-time high
28.9°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Fishers Island (8 mi).
Mon, 1271° / 50°0.12
71 °
Seaside, Monday, 12 October
Rain. High 71°, low 50°.
Pressure29.74 inHg
Wind8.5 mph N
Humidity66%
Visibility6.2 mi
Dew point56°
Tue, 1364° / 51°0
64 °
Seaside, Tuesday, 13 October
Light rain. High 64°, low 51°.
Pressure30.00 inHg
Wind10 mph SE
Humidity76%
Visibility6.2 mi
Dew point56°
Wed, 1477° / 61°0
77 °
Seaside, Wednesday, 14 October
Partly cloudy. High 77°, low 61°.
Pressure29.83 inHg
Wind7.4 mph W
Humidity68%
Visibility6.2 mi
Dew point65°
Thu, 1563° / 52°0
63 °
Seaside, Thursday, 15 October
Clear. High 63°, low 52°.
Pressure30.18 inHg
Wind5.4 mph N
Humidity54%
Visibility6.2 mi
Dew point44°
Fri, 1666° / 50°0.97
66 °
Seaside, Friday, 16 October
Rain. High 66°, low 50°.
Pressure29.65 inHg
Wind19 mph NW
Humidity93%
Visibility—
Dew point59°
Sat, 1748° / 39°0
48 °
Seaside, Saturday, 17 October
Clear. High 48°, low 39°.
Pressure30.06 inHg
Wind22.1 mph NW
Humidity54%
Visibility—
Dew point30°
Sun, 1852° / 36°0
52 °
Seaside, Sunday, 18 October
Partly cloudy. High 52°, low 36°.
Pressure30.65 inHg
Wind20 mph SW
Humidity35%
Visibility—
Dew point17°
Mon, 1960° / 51°0
60 °
Seaside, Monday, 19 October
Clear. High 60°, low 51°.
Pressure30.47 inHg
Wind21.1 mph SW
Humidity54%
Visibility—
Dew point38°
Tue, 2064° / 53°0
64 °
Seaside, Tuesday, 20 October
Partly cloudy. High 64°, low 53°.
Pressure30.33 inHg
Wind10.4 mph W
Humidity51%
Visibility—
Dew point41°
Wed, 2161° / 52°0
61 °
Seaside, Wednesday, 21 October
Overcast. High 61°, low 52°.
Pressure30.42 inHg
Wind11 mph E
Humidity70%
Visibility—
Dew point48°
Thu, 2258° / 56°0.01
58 °
Seaside, Thursday, 22 October
Light rain. High 58°, low 56°.
Pressure30.42 inHg
Wind20.1 mph SE
Humidity75%
Visibility—
Dew point49°
Fri, 2363° / 60°1.83
63 °
Seaside, Friday, 23 October
Heavy rain. High 63°, low 60°.
Pressure29.88 inHg
Wind31.1 mph SE
Humidity86%
Visibility—
Dew point58°
Sat, 2457° / 49°0.27
57 °
Seaside, Saturday, 24 October
Rain. High 57°, low 49°.
Pressure29.29 inHg
Wind19.7 mph NW
Humidity77%
Visibility—
Dew point47°
Sun, 2551° / 44°0.1
51 °
Seaside, Sunday, 25 October
Light rain. High 51°, low 44°.
Pressure29.32 inHg
Wind16.7 mph NW
Humidity88%
Visibility—
Dew point43°
Mon, 2654° / 46°0.01
54 °
Seaside, Monday, 26 October
Light rain. High 54°, low 46°.
Pressure29.62 inHg
Wind15.4 mph NW
Humidity69%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2758° / 47°0.15
58 °
Seaside, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high58°
Average low47°
Average precipitation0.15 in
Chance of precipitation25%
Record high75° (1963)
Record low31° (1976)
Wed, 2858° / 46°0.16
58 °
Seaside, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.16 in
Chance of precipitation32%
Record high74° (2023)
Record low31° (1976)
Thu, 2957° / 45°0.17
57 °
Seaside, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.17 in
Chance of precipitation23%
Record high73° (1971)
Record low32° (1965)
Fri, 3056° / 44°0.17
56 °
Seaside, Friday, 30 October
Climate normal for this date — 60-year average.
Average high56°
Average low44°
Average precipitation0.17 in
Chance of precipitation25%
Record high69° (1971)
Record low33° (2020)
Sat, 3157° / 45°0.08
57 °
Seaside, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low45°
Average precipitation0.08 in
Chance of precipitation23%
Record high72° (2024)
Record low29° (2020)
Sun, 0158° / 46°0.11
58 °
Seaside, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.11 in
Chance of precipitation32%
Record high74° (2024)
Record low36° (1968)
Mon, 0258° / 46°0.09
58 °
Seaside, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low46°
Average precipitation0.09 in
Chance of precipitation30%
Record high68° (2022)
Record low30° (1965)
Tue, 0358° / 45°0.17
58 °
Seaside, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low45°
Average precipitation0.17 in
Chance of precipitation30%
Record high70° (1990)
Record low32° (2002)
Wed, 0456° / 45°0.04
56 °
Seaside, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.04 in
Chance of precipitation23%
Record high70° (1975)
Record low33° (2013)
Thu, 0556° / 45°0.15
56 °
Seaside, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low45°
Average precipitation0.15 in
Chance of precipitation38%
Record high69° (2022)
Record low33° (1965)
Fri, 0655° / 44°0.13
55 °
Seaside, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.13 in
Chance of precipitation35%
Record high71° (2024)
Record low32° (2012)
Sat, 0755° / 43°0.08
55 °
Seaside, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.08 in
Chance of precipitation25%
Record high73° (2022)
Record low30° (1962)
Sun, 0854° / 42°0.12
54 °
Seaside, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.12 in
Chance of precipitation30%
Record high71° (2020)
Record low30° (2019)
Mon, 0954° / 42°0.09
54 °
Seaside, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low42°
Average precipitation0.09 in
Chance of precipitation20%
Record high71° (1975)
Record low26° (2019)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Seaside, CT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Seaside, CT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.